Laptop does not show dvd drive under my computer. under device manager it is there but with yellow exclamation point. ive tried uninstalling and reinstalling it, to no avail. please help.

I think it started when i disabled some items in startup programs. i have a program called dvd43 and it quit working when i did this. i tried reenableing all, but dvd43 never came back online. it wasn't till a couple of days later when i noticed the dvd played was missing from the my computer folder. and system restore crashes whenever i try to to go back to an earlier date. please help oh, if it helps my dvd player model is matshita dvd ram uj814s.

6 Suggested Answers

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Right click on the driver and then click Properties.
On the properties screen, check the device status and then go to the Details tab at the top.
If the details screen shows any errors or problems abt anything other than drivers, then follow the steps below to delete the upper and lower filters from registry.

Step 1: Back up the registry

Click Start and and in the Start Search box type in REGEDIT and hit Enter .

From the Registry Editor window, perform one of the following depending on the operating system:

Click File and then click Export File.

The Export Registry File window will be displayed. Save In: should be set to the Desktop . Next to File Name: provide an easily identifiable filename like “Full Registry Backup”. In the Export Range portion of the window, make sure the radio button next to All is selected. Click Save to save an exported copy of the registry to the desktop.

Step 2: Remove upper and lower filters

The steps below describe how to remove the drivers associated with the drives disappearing. After removing the filter driver keys, the CD recording software will be have to be re-installed.

With a copy of the registry exported, click the plus signs [+] in front of the follow keys in the order they are listed: HKEY_LOCAL_MACHINE , SYSTEM , and then ControlSet . In some cases, multiple ControlSets may be listed similar to the following:

Click the plus sign [+] in front of either CurrentControlSet or the lowest numbered ControlSet. For example, in the second list above, ControlSet001 would be the correct listing.

Click the plus sign [+] in front of Control.

Click the plus sign [+] in front of Control.

Click the plus sign [+] in front of Class.

Locate the following key and highlight it in the left window of the Registry Editor (The numbers can be very similar, be careful select the correct key. Another method to find the correct key is to highlight Class, then cut and paste the key below into a Find window accessed from Edit and Find in the Registry Editor.)

{4D36E965-E325-11CE-BFC1-08002BE10318}

With the key highlighted, the right pane will have multiple keys listed including LowerFilters and UpperFilters. Highlight LowerFilters and press the Delete (Del) on the keyboard. A confirmation dialog box will be displayed asking if the value should be deleted. Click Yes to delete the value.

Repeat the process for the UpperFilters by highlighting UpperFilters, pressing the Delete (Del) key on the keyboard and again confirming the value should be deleted by clicking Yes.

Exit the Registry Editor

Restart the computer. The optical drives should then be recognized and available for use.

I just noticed that it is a 802.11a/ . "a" wireless products do not work correctly and you need an "a" router to connect to. The "g" protocol is the most common and reliable.
If it is a new adapter, I would return it and get a 802.11 g adapter, not a USB.. they cost about $20.

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click start control panel administration tools computer management device manager scroll through all of your devices if you see a yellow question or exclamation mark ? ! or a red X you will need to update the drivers for this device right click select update driver/reinstall driver

if you can see your usb device but its not working sroll to Ports(Com&Ltd) right click to update driverif you computer came with a motherboard disk the drivers could be on itor you might have to download one
cd/dvddrive not seen could be a registry problemClick start control panel administrive tools,computer management,device manager scroll down cd-dvd rom drives you might see a yellow question /exclamation mark ? ! or a red X right click to update driver or select properties general troubleshoot, select driver click to reinstall drivers click update driver or uninstall then reinstall if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorerClose all open programs

Click on Start, Run, and type regedit and press EnterClick on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editorReboot your computerOpen My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.or

you might have to physically unplug the leads for this cd/dvd restart your computer then plug them back this should activate the found new hardware wizard oryou might have to uninstall then restart your computer then reinstall your DVD/CD then reinstall the driver for this device .

Click start control panel administrive tools,computer management,device manager scroll down cd-dvd rom drives you might see a yellow question mark ? right click you will have options to update driver,roll back driver,or select properties general troubleshoot, select driver click to reinstall drivers click update driver or uninstall then reinstall if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorerClose all open programs

Click on Start, Run, and typeregedit and press EnterClick on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editorReboot your computerOpen My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.oryou might have to physically unplug the leads for this cd/dvd then plug them back this should activate the found new hardware wizard oryou might have to uninstall then restart your computer then reinstall your DVD/CD then reinstall the driver for this device if your computer came with a motherboard disk the drivers could be on itclick start control panel administrive tools computer management device manager scroll down cd dvdrom drives if you see a yellow question or exclamation mark? ! or a red x right click you will need to update the driverorselect properties general troubleshoot, select driver click to reinstall drivers click update driver hope this helps you

Click start control
panel administrive tools,computer management,device manager scroll down cd-dvd
rom drives you might see a yellow question mark ? right click you will
have options to update driver,roll back driver,or select properties general
troubleshoot, select driver click to reinstall drivers click update
driver or uninstall then reinstall if this does not fix the problem it might be
a registry problem if you cant see your disk drive in windows explorerClose all open
programs

Click on
Start, Run, and typeregedit and press
EnterClick on the plus signs (+)
next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder
is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the
following names in the right hand column.

Upper
Filters

Lower
Filters

Upper
Filters.bak

Lower
Filters.bak

If any of the above keys shown in step
4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computerOpen My Computer and
check to see if your CD or DVD drives have returned. You may also want to open
Device Manager and verify that the yellow exclamation and error code on the CD
or DVD drive is gone.or
you might have to physically unplug the leads for this cd/dvd then plug
them back this should activate the found new hardware wizard oryou might have to uninstall
then restart your computer then reinstall your DVD/CD then reinstall the driver
for this device if your computer came with
a motherboard disk the drivers could be on itclick start control panel
administrive tools computer management device manager scroll down cd dvdrom
drives if you see a yellow question or exclamation mark?! or a red x
right click you will need to update the driverorselect properties general troubleshoot, select driver
click to reinstall drivers click update driver hope this helps you

Click start control panel administrive tools,computer management,device manager scroll down cd-dvd rom drives you might see a yellow question or exclamation mark ? ! or red X right click you will have options to update driver,roll back driver,, select driver click to reinstall drivers click update driver or uninstall then reinstall if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorerClose all open programs

Click on Start, Run, and typeregedit and press EnterClick on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editorReboot your computerOpen My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.oryou might have to physically unplug the leads for this cd/dvd then plug them back this should activate the found new hardware wizard oryou might have to uninstall then restart your computer then reinstall your DVD/CD then reinstall the driver for this device: if your computer came with a motherboard disk the drivers could be on itclick start control panel administrive tools computer management device manager scroll down cd dvdrom drives if you see a yellow question or exclamation mark?! or a red x right click you will need to update the driverorselect properties general troubleshoot, select driver click to reinstall drivers click update driver hope this helps

right click my computer, then click properties. click device manager. then see if there is anything under cd rom drives that has a yellow exclamation point. if it does then right click and uninstall and then reboot the computer and it should automatically find it and reinstall it and could fix yoru problem

You can try to check device manager go to start>right click computer>select manage>click device manager>then if you have the drive appeared on the list with yellow exclamation point then right click it uninstall and restart the computer

NOTE: The card reader will appear in two places: Disk Drives and Universal Serial Bus controls as USB Mass Storage. If there is a yellow exclamation point (!) or question mark (?) next to the device, try to refresh the drivers.

STEP 3 - Refresh the drivers1. Right-click the entry with the error mark, select Uninstall.2. On the top menu, click Action, and then click Scan for hardware changes.

STEP 4 - Verify if the reader is detected1. Double-click My Computer.2. Look for the card reader under Devices with removable storage.

SOLUTION 3 - Try other USB ports.A yellow exclamation point (!) under Device Manager usually means that the device is not receiving enough power. If the reader is not receiving ample amount of power from the USB port, it may not function properly.

"Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)"

Because of this error, the drive did not show up in My Computer and the customer was unable to burn CDs or read any CDs.

I uninstalled the drive from Device Manager, rebooted the computer,
and the problem remained, so obviously it appeared to be a registry
issue that I would have to solve. If you are receiving this Code 39
error and your CD or DVD drive is missing and has a yellow exclamation
mark in Device Manager, I hope this information is useful.

To solve this Code 39 error, follow these instructions:

NOTE: After removing these registry keys and rebooting, it may be necessary to reinstall any CD or DVD recording applications.

4) This folder is the DVD/CD-ROM Drive Class Description in the
registry. Look for any of the following names in the right hand column.

* UpperFilters
* LowerFilters
* UpperFilters.bak
* LowerFilters.bak

5) If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

6) After deleting the keys, close the Registry Editor

7) Reboot
your computer

8) Open My Computer and check to see if your CD or DVD drives have
returned. You may also want to open Device Manager and verify that the
yellow exclamation and error code on the CD or DVD drive is gone

Download the latest driver for dvd rom from Acer that will work with Vista SP1. Also try uninstalling the device in device manager and restart your computer. Vista may find "new hardware" and install the driver from its driver pack in SP1.